If you are like and me and enjoy building electronic projects then you might have worked with the Arduino Uno. The Arduino uno is the most popular micro controller of the series and has a large collection of libraries which make working with it very easy. So there would be times where you may need more than one Uno for the project, I like to make my own micro controller rather than buying a new one, as this saves me some money which may be helpful for other such projects. Pcnet Isa Ii Lan Driver. In this tutorial I'm going to show you how to, build your own Arduino Uno clone, so you can use it along side with circuits.

This is a breadboard tutorial so no soldering skills are required. You can check out my video tutorial above. The Arduino is based on the Atmega328 IC and it is also the heart of the circuit. All the processing and everything else is done by the IC.

After having fun and experimenting with your Arduino or Freetronics Eleven board, you will most likely think of various projects that could be self-cont. 3 related questions.

The Atmega328 has to have a arduino boot loader flashed on to it to program it using the Arduino IDE. The arduino uno is made of three parts • Atmega328 IC • Voltage Regulators • Serial Programmer You can purchase an Atmega328 IC with the Arduino boot-loader pre-installed or you can also install it yourself but you will need an Arudino uno to install the boot-loader. So it is recommended to get a Atmega328 with a pre-installed boot-loader. The first step will involve building a voltage regulator, the atmega328 is a 5V micro controller so is the arduino Uno. So we need a regulated power supply to power the Atmega328 IC. For this we will be using a L7805 voltage regulator this is a popular voltage regulator and is cheap and serves the purpose of building an Arduino uno. This voltage regulator gives a voltage of 5V and a maximum load current of 1A.

You can also use a better efficiency regulator if you need more power output. You may also use a breadboard power supply as an alternative. The circuit is fairly simple and the connections from the Arduino to any external circuit may vary depending on the external circuits. It would be recommended to try it out on a breadboard first. Follow the circuit above and assemble it on the breadboard. You can also add a led on digital pin 13 if you want to replicate the on board led as on the Arduino uno.

I am assuming you got an arduino with a preinstalled boot-loader if you got one without the bootloader you can use an Arduino uno to flash the boatload on the IC. Great instructable. Building an 'Arduino' from the ground up so to speak is a good way of learning and I have done so many times Nevertheless -and i usually get flamed for this- if you 'just want an arduino' self building is not economical with a UNO clone available for about 3 USD. A bare Atmega328P-pu chip can be had for 1.30 USD, but then u still need to add crystal, 7805, capacitor, LED, breadboard and then you dont even have USB input yet If you want to go small and low power and therefore want to ditch the FTDI part, take a pro mini for about 1.50 USD. So to summarize, great instructable, great way to learn, but if you just want an arduino cheap, just buy one 1 year ago.

The middle section of the board has two columns, each with 30 strips of connector, like the one pulled out and to the side of the breadboard. These connect together anything that is pushed through from the front into one of those five holes. On either edge of the board are much longer sections of clip that join together the columns of holes marked by the blue and red lines on the front of the breadboard. These are generally used for GND (blue) and 5V (red). This is the breadboard layout used in lesson 2. There is a red jumper wire going from the 5V socket on the Arduino to one of the long power connectors on the breadboard. The resistor has one lead pushed into one of the holes on that 5V red column.

The resistor's other lead goes to one of the rows on the right hand side of the board in the center of the board. The LED spans another connector on the same row as the resistor lead (connecting them together) and the blue (GND) long connector on the right of the breadboard. This long blue GND strip is connected near its top to the GND connection of the Arduino.

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